Case Rep Otolaryngol. 2013;2013:426413. doi: 10.1155/2013/426413. Epub 2013 Nov 20.
Case reports in otolaryngology
J T Boyd, D A Silverman
PMID: 24349813 PMCID: PMC3853069 DOI: 10.1155/2013/426413
Patulous Eustachian tube (PET) is a common condition that produces symptoms of aural fullness and autophony. We describe a Parkinson's disease (PD) patient that experienced a reversible bilateral patulous (hyperpatent) Eustachian tube syndrome induced by treatment with amantadine hydrochloride. The clinical features, relevant anatomy and physiology, and associated risk factors for PET are reviewed.